

Secure and safe heat supply of residenal buildings during transional climac condions
https://doi.org/10.24223/1999-5555-2018-11-2-149-153
Abstract
An elementary arrangement of a heat supply of residential buildings with direct connection to external heating systems is considered, providing reliability of heat supply and comfort required in indoor premises in case of cold snaps after the official closure of the heating season, or before the beginning of the same, by supplying water from the return main of the heating system after the hot water heat exchangers. The basic equations are analyzed relating the heat transfer to the heating system with water temperature in the manifold, the inside air temperature and the characteristics of the heaters, with a review of possible methods of regulating the heat supply near the beginning and the end of the heating period provided taking into account requirements of normative documents of the Russian Federation. Calculations are performed to determine the amount of the main components of the heat balance of a residential building on the example of one of the standard projects used currently in the climatic conditions of Moscow taking into account the constructive structural characteristics of the building and its occupancy level. Analysis of the obtained results and conclusions regarding the appropriateness of the application of this arrangement are provided. It is established that the actual heat output of the heating system when using a chilled water network down-stream the hot water supply heat exchangers as a heat source enables to maintain the safe indoor temperature in the building, with the average daily temperature of outdoor air above +2° C in conditions of moderate amount of heat received with solar radiation. It is shown that the use of this arrangement is virtually not accompanied by additional costs, provides hydraulic resistance of the heating system and gives a system-wide effect in the form of higher electricity generation at thermal consumption when using cogeneration.
About the Author
O. D. SamarinRussian Federation
Yaroslavskoye shosse, 26, 129337, Moscow
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Review
For citations:
Samarin O.D. Secure and safe heat supply of residenal buildings during transional climac condions. Safety and Reliability of Power Industry. 2018;11(2):149-153. (In Russ.) https://doi.org/10.24223/1999-5555-2018-11-2-149-153